As a part of this work, dry seeds of Triticum monococcum (var. Japanese Early), T. dicoccum (var. Khapli) and T. aestivum (var. C. 591) were irradiated for 3 hours with fast neutrons of source strength 109NF/Cm2/Sec. over a 2pi solid angle at the cascade generator of the Tata Institute of Fundamental Research, Bombay, using the reaction d(Be9B10)Alpha. The seeds were germinated in petridishes; some seedlings were transplanted into pots and some were used for the study of somatic cell division, which was done in Feulgen root tip squashes prepared from material fixed in acetic-alcohol (1:3) 24, 48 and 96 hours after germination.